Roller driving apparatus of laminator

ABSTRACT

A roller driving apparatus of a laminator includes a pair of supporting frames facing each other, upper and lower rollers formed between the supporting frames, upper and lower roller gears coupled with one end of the roller passing through one supporting frame to transfer rotational force to the roller and meshed with each other, connection gear selectively coupled to either the upper roller gear or the lower roller gear to transfer rotational force, motor disposed outside the one supporting frame and to which motor is fixed, motor gear fixed to rotational shaft of the motor, for selectively transferring the rotational force of the motor to the connection gear, manipulating means for manipulating transfer state of the rotational force from the motor gear to either the upper gear or the lower roller gear by moving the connection gear using external force of user, and fixing means for fixing manipulated location.

TECHNICAL FIELD

The present invention relates to a roller driving apparatus of alaminator, and more particularly, to a roller driving apparatus of alaminator, which drives a roller in the laminator performing alaminating operation by the roller that is operated by a one-wayrotating motor. Specially, the present invention relates to a rollerdriving apparatus of a laminator, which is capable of controllingforward and backward rotations of the roller using a one-way rotatingmotor only through a user's simple manipulation in a small-sizedlaminator.

BACKGROUND ART

A laminator is a device that performs a coating operation using heat andpressure applied by a roller in a state that a to-be-coated plate-shapedmember is inserted between laminating films.

FIG. 1 is a perspective view of a conventional small-sized laminator.

Referring to FIG. 1, the conventional small-sized laminator includes aroller 5 for applying a pressure to a pair of films FL of which onesurface is in contact with the roller 5, plate-shaped supporting frames1 a and 1 b for supporting both ends of the roller 5, roller gears 3formed on an outer face of the plate-shaped supporting frame 1 b toapply a rotational force to the roller 5, a motor gear 2 meshed with theroller gears 3 to transfer a rotational force of a motor M, and amanipulating panel for manipulating an operation of the laminator.

An operation of the above-described small-sized laminator will bedescribed below. The rotational force of the motor M is transferred tothe upper roller gear 3 a by the motor gear 2, and the rotational forceof the upper roller gear 3 a is transferred to the lower roller gear 3 bmeshed with the upper roller gear 3 a. Also, the rotational forces ofthe roller gears 3 are transferred to the roller 5 coupled with theroller gears 3. Then the films FL are pressed and heated by the roller 5and is coated together with the plate-shaped member inserted between theupper film and the lower film.

Meanwhile, the small-sized laminator has a problem that the films arerolled to the roller 5 while the films are pressed and heated by theroller 5. Further, in case a user slantingly inserts the film, there isa problem that the films are distorted so that the coating operation isnot performed correctly.

Hereinafter, it will be described methods applied to solve thoseproblems according to the prior art.

One method is to disassemble the laminator to remove the film rolled tothe roller. However, this method has an inconvenience that the procedureof disassembling the laminator should be entrusted to a technicalexpert.

Further, another method is to mount a motor rotatable in both forwardand backward directions and to rotate the motor in the backwarddirection to pull out the film rolled to the roller 5. However, thebi-directional rotating motor rotatable in the backward direction ismore expensive than the one-way rotating motor, and additional elementssuch as a condenser and a forward/backward rotating switch are needed.As a result, there is a problem that a manufacturing cost of thelaminator is increased.

Particularly, since the small-sized laminator for home use or portablehas such a simple structure that it is heated and pressed by one pair ofrollers, it is much more inefficient to attach the bi-directionalrotating motor, the condenser and the forward/backward rotating switch,which results in an increase of the manufacturing cost and the size ofthe laminator.

DISCLOSURE OF THE INVENTION

The present invention relates to a roller driving apparatus of alaminator. The roller driving apparatus of the laminator comprises: apair of supporting frames facing each other; upper and lower rollersformed between the supporting frames; upper and lower roller gearscoupled with each one end of the upper and lower rollers passing throughone supporting frame, for transferring rotational force to the upper andlower rollers, wherein the upper and lower roller gears are meshed witheach other; at least one connection gear selectively coupled to eitherthe upper roller gear or the lower roller gear, for transferringrotational force; a motor fixing means disposed outside the onesupporting frame, for fixing a motor; a motor gear fixed to a rotationalshaft of the motor, for selectively transferring the rotational force ofthe motor to the connection gear; a manipulating means disposed betweenthe one supporting frame and the motor fixing means, for manipulating atransfer state of the rotational force from the motor gear to either theupper roller gear or the lower roller gear by moving the connection gearusing an external force of a user, wherein a center of the connectiongear is coupled to the manipulating means; and a fixing means for stablyfixing the manipulating means.

The roller driving apparatus of the laminator in accordance with thepresent invention can implement forward and backward rotations of theroller to the user's intensions by using only the driving of the motorrotating in one-way direction, thereby improving much more a conveniencein a use of the laminator.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a conventional small-sized laminator;

FIG. 2 is a perspective view showing a roller driving apparatus of alaminator in accordance with a first embodiment of the presentinvention;

FIG. 3 is an exploded perspective view showing the roller drivingapparatus of the laminator in accordance with the first embodiment ofthe present invention;

FIG. 4 is a view explaining a forward rotation state of the roller inthe first embodiment of the present invention;

FIG. 5 is a view explaining a backward rotation state of the roller inthe first embodiment of the present invention;

FIG. 6 is a view explaining a stopping state of a roller in the firstembodiment of the present invention;

FIG. 7 is an exploded perspective view showing a roller drivingapparatus of a laminator in accordance with a second embodiment of thepresent invention;

FIG. 8 is a view explaining a forward rotation state of the roller inthe second embodiment of the present invention;

FIG. 9 is a view explaining a backward rotation state of the roller inthe second embodiment of the present invention;

FIG. 10 is a view explaining a stopping state of the roller in thesecond embodiment of the present invention;

FIG. 11 is an exploded perspective view showing a roller drivingapparatus of a laminator in accordance with a third embodiment of thepresent invention;

FIG. 12 is a view explaining a forward rotation state of the roller inthe third embodiment of the present invention;

FIG. 13 is a view explaining a backward rotation state of the roller inthe third embodiment of the present invention;

FIG. 14 is a view explaining a stopping state of the roller in the thirdembodiment of the present invention;

FIG. 15 is an exploded perspective view showing a roller drivingapparatus of a laminator in accordance with a fourth embodiment of thepresent invention;

FIG. 16, 17 and 18 are view explaining a forward rotation state, abackward rotation state, and a stopping state of the roller in thefourth embodiment of the present invention;

FIG. 19 is an exploded perspective view showing a roller drivingapparatus of a laminator in accordance with a fifth embodiment of thepresent invention;

FIG. 20 is an exploded perspective view showing a roller drivingapparatus of a laminator in accordance with a sixth embodiment of thepresent invention; and

FIGS. 21 and 22 are views explaining an operation of the roller drivingapparatus of the laminator in the sixth embodiment of the presentinvention.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of the present invention will bedescribed in detail with reference to accompanying drawings. Here, thesame reference numbers are assigned with respect to elements consistingof one pair and each of the pair is subdivided using an English letter.

First Embodiment

FIGS. 2 and 3 are a perspective view and an exploded perspective viewshowing a roller driving apparatus of a laminator in accordance with afirst embodiment of the present invention, respectively.

Referring to FIGS. 2 and 3, the roller driving apparatus of thelaminator includes supporting frames 11 a and 11 b facing each other,rollers 13 a and 13 b formed between the supporting frames 11, upper andlower roller gears 14 a and 14 b coupled with one end of the rollers 13to transfer rotational forces of the rollers 13, a connection gear 15selectively coupled to either the upper roller gear 14 a or the lowerroller gear 14 b to transfer the rotational force, and a motor gear 16selectively transferring a rotational force of a motor M to theconnection gear 15.

Also, the roller driving apparatus of the laminator further includes amotor fixing member 12 and a manipulating member. The motor M is fixedto the motor fixing member 12. A manipulating member includes: amanipulating part 18 to whose one side both ends of the connection gear15 are fixed; a manipulating bar 17 formed on the manipulating part 18and extended to the other side of the manipulating part 18; a centralshaft 195 inserted into the supporting frame 11 b, the manipulating part18 and the motor fixing member 12 to thereby become a rotational centerof the manipulating part 18; and a guide shaft 196 inserted into thesupporting frame 11 b, the manipulating part 18, the connection gear 15and the motor fixing member 12 to thereby guide a position of theconnection gear 15.

In more detail, the manipulating part 18 includes: guide-shaft insertingholes 182 at which positions of both ends of the connection gear 15 arefixed, in which the guide shaft 196 is inserted into the connection gear15; ellipse-shaped central-shaft inserting holes 183 at which themanipulating part 18 is movable in right and left directions by apredetermined distance in a state that the central shaft 195 is insertedthereinto; and hanging protrusions 181 formed protrusively at a centralportion between the guide-shaft inserting holes 182 and thecentral-shaft inserting holes 183 to thereby support correctly themanipulated position of the manipulating part 18.

Further, both the supporting frame 11 b and the motor fixing member 12include circular fixing holes 114 and 124 into which the central shaft195 is inserted and arc-shaped guide holes 113 and 123 into which theguide shaft 196 is inserted. Also, both the supporting frame 11 b andthe motor fixing member 12 include upper hanging holes 112 and 122,stopping holes 115 and 125 and lower hanging holes 111 and 121, to whichthe hanging protrusions 181 are hanged, so that the position of themanipulating part 18 is correctly supported.

Furthermore, the manipulating bar 17 can be formed as one body togetherwith the manipulating part 18, and also can be later coupled with ascrew by forming a screw thread on a portion into which the manipulatingbar 17 is to be inserted.

Meanwhile, the roller gears 14 are not meshed directly with the motorgear 16 and the rotational force is transferred to the roller gear 14 ina state that the connection gear 15 is engaged. Also, to mesh theconnection gear 15 with both the roller gears 14 and the motor gear 16,a body of the connection gear 15 is formed long.

An operation of the roller driving apparatus of the laminator inaccordance with the first embodiment of the present invention will bedescribed with reference to the above-described structure.

If a user wants the motor to be rotated in a forward or backwarddirection or wants the motor to be stopped, a coupling state of theconnection gear 15 can be changed by applying an external force to themanipulating bar 17 in up and down directions. In more detail, theforward rotation can be achieved by meshing the connection gear 15 withboth the motor gear 16 and the upper connection gear 14 a. However, thebackward rotation can be achieved by setting the rotational direction ofthe motor to the forward rotation and meshing the connection gear 15with both the motor gear 16 and the lower connection gear 14 b.Additionally, the user can directly remove the film FL from the rollers13 by setting the manipulating part 18 to a state that the connectiongear 15 is not meshed with anything else.

Further, to correctly support the manipulating part 18 at apredetermined position set by the user, it is noted that the hangingprotrusions 181 formed on both sides of the manipulating part 18 shouldbe positioned at either of the upper hanging holes 112 and 122, thestopping holes 115 and 125 or the lower hanging holes 111 and 121 lestthat the hanging protrusions 181 should be taken out.

Furthermore, in order to enable the user to move the position of themanipulating part 18, the guide holes 113 and 123 is formed in an arcshape and in a progressive direction of the guide shaft 196, and thecentral-shaft inserting holes 183 into which the central shaft 195 isinserted is formed in an ellipse shape.

An operation of the roller driving apparatus of the laminator will bedescribed below in detain with reference to additional drawings based onthe above description.

FIGS. 4 to 6 are views explaining a forward rotation state, a backwardrotation state and a stopping state of the roller in the firstembodiment of the present invention, respectively.

Referring to FIG. 4, the connection gear 15 is meshed with both themotor gear 16 and the upper roller gear 14 a. In other words, therotational force of the motor M is transferred to the upper roller gear14 a through the motor gear 16, the connection gear 15 and the upperroller gear 14 a. At this time, since the lower roller gear 14 b ismeshed with the upper roller gear 14 a, the lower roller gear 14 b hasthe same number of rotations as the upper roller gear 14 a and transfersthe rotational force to the lower roller 13 b.

In such a state that the roller is rotated in the forward direction, thehanging protrusions 181 are inserted into the upper hanging holes 112and 122 to thereby fix each position of the manipulating part 18 and theconnection gear 15.

Also, rotational directions of arrows shown in FIG. 4 represent those ofrespective gears.

Referring to FIG. 5, the connection gear 15 is meshed with both themotor gear 16 and the lower roller gear 14 b. In other words, therotational force of the motor M is transferred to the lower roller 13 b(referring to FIG. 3) through the motor gear 16, the connection gear 15and the lower roller gear 14 b. At this time, the upper roller gear 14 ais meshed with the lower roller gear 14 b, so that the upper roller gear14 a has the same number of rotations as the lower roller gear 14 b andtransfers the rotational force to the upper roller 13 a (referring toFIG. 3).

In such a state that the roller is rotated in the backward direction,the hanging protrusions 181 are inserted into the lower hanging holes111 and 121 so that each position of the manipulating part 18 and theconnection gear 15 is fixed.

Meanwhile, to achieve a smooth movement of the connection gear 15 whilethe user changes the position of the manipulating part 18 using themanipulating bar 17, the guide holes 113 and 123 into which the guideshaft 196 is inserted is formed in an arc shape and the central-shaftinserting holes 183 into which the central shaft 195 is inserted isformed in an ellipse shape. With these topologies and structures, theconnection gear 15 can be smoothly inserted into or taken out from theroller gears 14 and the motor gear 16.

Although the motor M is rotated in the forward direction at the backwardrotation state of the roller, the roller 13 is rotated in the backwarddirection so that the film FL is removed. After the film FL is allremoved, the coating operation can be again performed by setting theposition of the manipulating part 18 to the forward rotation state.

Referring to FIG. 6, the connection gear 15 is not meshed with any ofthe motor gear 16 and the roller gears 14. In other words, therotational force of the motor M is not transferred, but also the rollergears 14 are independently rotated regardless of the motor gear 16. Insuch a state, the user can oneself pull out the film to remove it fromthe laminator.

In such a stopping state of the roller, the hanging protrusions 181 areinserted into the stopping holes 115 and 125 so that each position ofthe manipulating part 18 and the connection gear 15 is fixed.

Even when the operation of the laminator is stopped for other reasonsexcept that the film is not removed even using the backward rotation ofthe rollers 13 or the film is rolled to the roller 13, the stoppingstate shown in FIG. 6 can be also applied to a case that the film isremoved toward the outside of the laminator by pulling out the filminserted into the laminator.

Meanwhile, in case the forward rotational direction of the motor ischanged to the opposite, the rotational directions of FIGS. 4 and 5 arealso changed to the opposite, so that the positions of the forward andbackward rotations can be changed.

Further, a smooth movement of the shaft can be secured by inserting aplurality of washers into positions which the central shaft 195 and theguide shaft 196 are inserted into, and a more firm coupling can also beachieved by applying screws to coupling portions.

Second Embodiment

A roller driving apparatus of a laminator in accordance with a secondembodiment of the present invention includes supporting frames 21 a and21 b, rollers 23 a and 23 b, a motor gear 26 coupled to a motor, and amotor fixing member 22, all of which are the same elements as the firstembodiment of the present invention. Meanwhile, compared with the firstembodiment of the present invention, the second embodiment of thepresent invention has differences in connection gears 25 a and 25 b, amanipulating member 27 applying an external force of the user and astructure related to a coupling between the connection gears 25 and themanipulating member 27. The roller driving apparatus of the laminator inaccordance with the second embodiment of the present invention will bedescribed below in detail focusing on the different elements from thefirst embodiment of the present invention.

FIG. 7 is an exploded perspective view showing the roller drivingapparatus of the laminator in accordance with the second embodiment ofthe present invention.

Referring to FIG. 7, the roller driving apparatus of the laminatorincludes: a pair of upper and lower connection gears 25 a and 25 b;upper and lower gear shafts 29 a and 29 b inserted into central axes ofthe upper and lower connection gears 25 a and 25 b; a pair of linkpanels 28 a and 28 b into which the upper and lower gear shafts 29 a and29 b are inserted so as to be moved in relation to the upper and lowergear shafts 29 a and 29 b; and a central shaft 30 serving as arotational center of the link panels 28.

Also, the roller driving apparatus of the laminator further includes amanipulating member 27 for manipulating forward and backward rotationsof the rollers 23 using the external force of the user, in which gearinserting holes 274 for supporting the lower connection gear 25 b areformed thereon.

In more detail, the manipulating member 27 includes the gear insertingholes 274 and three hanging grooves 271, 272 and 273. The lowerconnection gear 25 b is internally inserted into the gear insertingholes 274, and the lower gear shaft 29 b, i.e., a central shaft of thelower connection gear 25 b, is inserted thereinto, so that the lowerconnection gear 25 b is supported. The three hanging grooves 271, 272and 273 are used to stably maintain the forward rotation, backwardrotation and stopping states of the rollers 23.

Also, the upper and lower gear shafts 29 a and 29 b are inserted intothe link panels 28 a and 28 b, the supporting frame 21 b, the connectiongears 25 and the motor fixing member 22. Particularly, the lower gearshaft 29 b is also inserted into the manipulating member 27, so that thelower gear shaft 29 b is moved according to the external force appliedby the user. An operation of the lower gear shaft 29 b is alsotransferred to the upper gear shaft 29 a by the link panels 28 tothereby control the transfer of the rotational force of the motor.

To couple the connection gears 25, the link panels 28 include upper gearholes 281 into which the upper gear shaft 29 a is inserted, lower gearholes 283 into which the lower gear shaft 29 b is inserted, and centralholes 282 into which the central shaft 30 is inserted.

Further, the supporting frame 21 b and the motor fixing member 22include upper shaft guides 211 and 221 and lower shaft guides 213 and223 into which the upper gear shaft 29 a and the lower gear shaft 29 bare respectively inserted, and circular central holes 212 and 222 intowhich the central shaft 30 is inserted. Particularly, the upper shaftguides 211 and 221 and the lower shaft guides 213 and 223 are formed inan arc shape so that the upper gear shaft 29 a and the lower gear shaft29 b can be properly moved in left and right directions according to thechange of positions of the connection gears 25.

An operation of the roller driving apparatus of the laminator inaccordance with the second embodiment of the present invention will bedescribed below with reference to the above-described construction.

If the user moves the manipulating member 27 backward and forwarddirections to move the lower connection gear 25 b coupled thereto, thelink panels 28 into which the lower connection gear 25 b is inserted arealso rotated around the central shaft 30. The rotation of the linkpanels 28 results in that of the upper gear shaft 29 a, so that thepositions of the upper and lower connection gears 25 a and 25 b areentirely changed.

Also, the upper shaft guides 211 and 221 and the lower shaft guides 213and 223 are formed on the supporting frame 21 b and the motor fixingmember 22 in the arc shape, thereby guiding the rotation of the linkpanels 28 and the movement of the upper and lower gear shafts 29 a and29 b.

Meanwhile, since the change of the position of the connection gears 25results in that of the mesh of the motor gear 26 with the roller gear24, the transfer direction of the rotational force is changed, so thatthe forward and backward rotations of the rollers 23 are manipulated tothe user's intentions.

FIGS. 8 to 10 are views explaining a forward rotation state, a backwardrotation state and a stopping state of the roller in the secondembodiment of the present invention, respectively.

Referring to FIG. 8, in case the user pulls out the manipulating member27 to change the position of the link panels 28 in a counterclockwisedirection, the upper connection gear 25 a is meshed with the motor gear26 and the upper roller gear 24 a. In the end, the rotational force ofthe motor is transferred to the upper roller 23 a through the motor gear26, the upper connection gear 25 a and the upper roller gear 24 a. Then,the upper roller gear 24 a is meshed with the lower roller gear 24 b togenerate the rotational force of the lower roller gear 24 b, so that thelower roller 23 b is also rotated with the same number of the rotationsas the upper roller 24 a.

At this time, the link panels 28 are in a state that it is rotated inthe counterclockwise direction around the central shaft 30. The uppergear shaft 29 a is in contact with a left side of the arc-shaped uppershaft guide 211 and the lower gear shaft 29 b is in contact with a rightside of the arc-shaped lower shaft guide 213, thereby setting itsposition. Since a first hanging groove 271 formed on a bottom of themanipulating member 27 is inserted into a panel of an external case 60,the manipulating member 27 is not taken out unless a constant externalforce is applied thereto, so that the mesh of the upper connection gear25 a is not taken out even by a torque applied when the upper connectiongear 25 a is rotated.

Meanwhile, to fix the first hanging groove 271 more firmly, a spring 275(referring to FIG. 7) is formed which vertically couples themanipulating member 27, the supporting frame 21 b and the motor fixingmember 22. The spring 275 generates a tension that pulls downward themanipulating member 27 lest the first hanging groove 271 should be takenout from the external case 60.

Referring to FIG. 9, in case the user pushes the manipulating member 27to change the position of the link panels 28 in a clockwise direction,the lower connection gear 25 b is meshed with the motor gear 26 and thelower roller gear 24 b. In the end, the rotational force of the motor istransferred to the lower roller 23 b through the motor gear 26, thelower connection gear 25 b and the lower roller gear 24 b. Then, thelower roller gear 24 b is meshed with the upper roller gear 24 a togenerate the rotational force of the upper roller gear 24 a, so that theupper roller 23 a is also rotated with the same number of the rotationsas the lower roller 24 b.

At this time, the link panel 28 is in a state that it is rotated in theclockwise direction around the central shaft 30. The upper gear shaft 29a is in contact with a right side of the arc-shaped upper shaft guide211 and the lower gear shaft 29 b is in contact with a left side of thearc-shaped lower shaft guide 213, thereby setting its position. Since athird hanging groove 273 formed on the bottom of the manipulating member27 is inserted into the panel of the external case 60, the manipulatingmember 27 is not taken out unless a constant external force is appliedthereto, so that the mesh of the lower connection gear 25 b is not takenout even by a torque applied when the lower connection gear 25 b isrotated.

Meanwhile, to fix the third hanging groove 273 more firmly, the spring275 (referring to FIG. 7) is formed which vertically couples themanipulating member 27, the supporting frame 21 b and the motor fixingmember 22. The spring 275 generates a tension that pulls downward themanipulating member 27 lest the third hanging groove 273 should be takenout from the external case 60.

Referring to FIG. 10, the user applies an external force to themanipulating member 27 to insert a second hanging groove 272 into thepanel of the external case 60. At this time, in a state that the linkpanels 28 are vertically set, the connection gears 25 are not meshedwith any of the roller gears 24. Thus, the rotational force of the motorM is not transferred to the rollers 23.

At this time, the user oneself can remove the rolled film from thelaminator by pulling out the rolled film.

Meanwhile, to fix the second hanging groove 272 more firmly, the spring275 (referring to FIG. 7) is formed which vertically couples themanipulating member 27 to generate a tension that pulls downward themanipulating member 27 lest the second hanging groove 272 should betaken out from the external case 60.

Meanwhile, in case a forward rotational direction of the motor ischanged to the opposite, the rotational directions of FIGS. 8 and 9 arealso changed, so that the positions of the forward and backwardrotations can be changed.

Further, a smooth movement of the shaft can be secured by inserting aplurality of washers into positions which the central shaft 195 and theguide shaft 196 are inserted into, and a more firm coupling can also beachieved by applying screws to coupling portions.

Third Embodiment

In a roller driving apparatus of a laminator in accordance with a thirdembodiment of the present invention, the supporting frames 21 a and 21b, the rollers 23 a and 23 b, the motor gear 26 coupled to the motor,and the motor fixing member 22, all of which are described as the secondembodiment of the present invention with reference to FIGS. 7 to 10, arealso applied to the third embodiment of the present invention.Meanwhile, compared with the second embodiment of the present invention,the third embodiment of the present invention has differences in theconnection gears 25 a and 25 b, the manipulating member 27 applying theexternal force of the user and the structure related to the couplingbetween the connection gears 25 and the manipulating member 27. Theroller driving apparatus of the laminator in accordance with the thirdembodiment of the present invention will be described below in detailfocusing on the different elements from the second embodiment of thepresent invention.

FIG. 11 is an exploded perspective view showing the roller drivingapparatus of the laminator in accordance with the third embodiment ofthe present invention.

Referring to FIG. 11, the roller driving apparatus of the laminatorincludes: upper and lower connection gears 35 a and 35 b forming onepair; upper and lower gear shafts 39 a and 39 b inserted into centralaxes of the upper and lower connection gears 35 a and 35 b; amanipulating member 37 into which the upper and lower gear shafts 39 aand 39 b are inserted so as to be movable in relation to the upper andlower gear shafts 39 a and 39 b; and a fixing spring 38 stably fixingpositions of a central shaft 40 and the manipulating member 37 aroundthe rotational center of the manipulating member 37.

In more detail, the manipulating member 37 includes upper and lowershaft fixing holes 371 and 373 and a spring guide 374. The upper andlower connection gears 35 a and 35 b are internally inserted into theupper and lower fixing holes 371 and 373, and the central shafts of theupper and lower connection gears 35, i.e., the upper and lower gearshafts 39 a and 39 b, are inserted thereinto, so that the upper andlower connection gears 35 are supported. The spring guide 374 has twoguide faces that are in contact with central-shaft fixing holes 372 intowhich the central shaft 40 is inserted and a fixing spring 38 to therebyfix the position of the manipulating member 37.

Also, the upper and lower gear shafts 39 a and 39 b are inserted intothe supporting frame 31 b, the connection gears 35, the motor fixingmember 32 and specially the manipulating member 37, so that the meshstate of the connection gears 35 is changed according to an externalforce applied by the user.

Further, the supporting frame 31 b and the motor fixing member 22include upper shaft guides 311 and 321 and lower shaft guides 313 and323 into which the upper and lower gear shafts 39 a and 39 b arerespectively inserted, and circular central holes 312 and 322 into whichthe central shaft 40 is inserted. Particularly, the upper shaft guides311 and 321 and the lower shaft guides 313 and 323 are formed in an arcshape so that the upper and lower gear shafts 39 a and 39 b can beproperly moved in left and right directions according to a change ofpositions of the connection gears 35. Furthermore, in order that theposition of the fixing spring 38 is correctly fixed at both front andrear ends, spring inserting holes 314 and 324 having the same outwardshape as the fixing spring 38 are further formed on each one side of thesupporting frame 31 b and the motor fixing member 32. However, theposition of the fixing spring 38 can be fixed by pushing into the springinserting holes 314 and 324.

An operation of the roller driving apparatus of the laminator inaccordance with the third embodiment of the present invention will bedescribed below with reference to the above-described structure.

If the user moves the manipulating member 37 in upward and downwarddirections to move the upper and lower connection gear 35 a and 35 binserted into the manipulating member 37, the upper and lower connectiongears 35 a and 35 b are meshed with the upper and lower roller gears 34a and 34 b or are separated, so that the transfer direction of therotational force is changed into forward or backward directions and thenthe rotational force is transferred.

Also, the upper shaft guides 311 and 321 and the lower shaft guides 313and 323 are formed on the supporting frame 31 b and the motor fixingmember 32 in the arc shape, thereby guiding the movement of the upperand lower gear shafts 39 a and 39 b.

Meanwhile, the change of the position of the connection gears 35 resultsin that of the mesh of the motor gear 36 with the roller gears 34 tothereby change the transfer direction of the rotational force, so thatthe forward and backward rotations of the rollers 33 are manipulated tothe user's intentions.

FIGS. 12 to 14 are views explaining a forward rotation state, a backwardrotation state and a stopping state of the roller in the thirdembodiment of the present invention, respectively.

Referring to FIG. 12, in case the user pushes upwards the manipulatingmember 37 to change the position of the manipulating member 37 in acounterclockwise direction, the upper connection gear 35 a is meshedwith the motor gear 36 and the upper roller gear 34 a. In the end, therotational force of the motor is transferred to the upper roller 33 athrough the motor gear 36, the upper connection gear 35 a and the upperroller gear 34 a. Then, the upper roller gear 34 a is meshed with thelower roller gear 34 b to generate the rotational force of the lowerroller gear 34 b, so that the lower roller 33 b is also rotated with thesame number of the rotations as the upper roller 34 a.

At this time, the manipulating member 37 is in a state that it isrotated in the counterclockwise direction around the central shaft 40.The upper gear shaft 39 a is in contact with a left side of thearc-shaped upper shaft guide 321 and the lower gear shaft 39 b is incontact with a right side of the arc-shaped lower shaft guide 323,thereby setting its position. The fixing spring 38 is in contact with asecond guide face 374 b of the spring guide 374 to apply a predeterminedforce to the manipulating member 37, so that the mesh of the upperconnection gear 35 a is not taken out even by a torque applied to themanipulating member 37 when the upper connection gear 35 a is rotated.

Referring to FIG. 13, in case the user pushes downward the manipulatingmember 37 to rotate the position of the manipulating member 37 in aclockwise direction, the lower connection gear 35 b is meshed with themotor gear 36 and the lower roller gear 34 b. In the end, the rotationalforce of the motor is transferred to the lower roller 33 b through themotor gear 36, the lower connection gear 35 b and the lower roller gear34 b. Then, the lower roller gear 34 b is meshed with the upper rollergear 34 a to generate the rotational force of the upper roller gear 34a, so that the upper roller 33 a is also rotated with the same number ofthe rotations as the lower roller 34 b.

At this time, the manipulating member 37 is in a state that it isrotated in the clockwise direction around the central shaft 40. Theupper gear shaft 39 a is in contact with a right side of the arc-shapedupper shaft guide 321 and the lower gear shaft 39 b is in contact with aleft side of the arc-shaped lower shaft guide 323, thereby setting itsposition. The fixing spring 38 is in contact with a first guide face 374a of the spring guide 374 to apply a predetermined force to themanipulating member 37, so that the mesh of the upper connection gear 35a is not taken out even by a torque applied to the manipulating member37 when the upper connection gear 35 a is rotated.

Referring to FIG. 14, in case the user applies an external force to themanipulating member 37 to contact the fixing spring 38 with an edge of acentral portion of the spring guide 374 without any contact with theguide faces 374 a and 374 b of the spring guide 374. At this state, anyconnection gears 35 are not meshed with the roller gears 34. Thus, therotational force of the motor M is not transferred to the rollers 33.Also, it is possible to obtain a more stable operation by forming thespring guide with three faces

At this time, the user oneself can remove the rolled film from thelaminator by pulling it out. However, the user should continuously holdthe manipulating member 37 while removing the film FL.

However, since the force is applied by the fixing spring 38 and thespring guide 374, the present invention has an effect to set moresmoothly and easier the forward and backward rotations of the motorthrough the manipulating member 37.

Meanwhile, in case the forward rotational direction of the motor ischanged to the opposite, the rotational directions of FIGS. 12 and 13are also changed, so that the positions of the forward and backwardrotations can be changed.

Further, a smooth movement of the shaft can be secured by inserting aplurality of washers into positions which the central shaft 195 and theguide shaft 196 are inserted into, and a more firm coupling can also beachieved by applying screws to coupling portions.

Fourth Embodiment

A roller driving apparatus of a laminator in accordance with a fourthembodiment of the present invention is identical to the above-describedthird embodiment in many respects. However, it is characteristic of thisinvention to include an additional structure to fix the position of themanipulating member 37 to the moved position after the manipulatingmember 37 is moved so as to set the rotational direction of the roller33. Hereinafter, the additional structure of the manipulating member 37will be described in detail.

FIG. 15 is an exploded perspective view showing the roller drivingapparatus of the laminator in accordance with the fourth embodiment ofthe present invention.

Referring to FIG. 15, the fifth embodiment of the present inventionincludes two additional structures for firmly fixing the position of themanipulating member 37.

A first structure includes supporting bar inserting holes 315 and 328, asupporting bar 327 and supporting bar hanging projections 375. Thesupporting bar inserting holes 315 and 328 are formed on predeterminedpositions of a right supporting frame 31 b and a motor fixing member 32,respectively. Both ends of the supporting bar 327 are inserted into thesupporting bar inserting holes 315 and 328 and are fixed thereto. Thesupporting bar hanging projections 375 are protrusively formed on bothends of the manipulating member 37, thereby being in contact with thesupporting bar 327. Meanwhile, it is desirable that the supporting bar327 should be formed of a piano wire so as to maintain predeterminedelasticity and strength.

Explaining an operation of the first structure, after the manipulatingmember 37 is moved upward or downward, the manipulating member 37 ishung between the supporting bar 327 and the supporting bar hangingprojections 375, so that the position of the manipulating member 37 isfixed.

Also, as a second structure, protrusions 318, 319, 329 and 330 arefurther formed. The protrusions 318, 319, 329 and 330 fix positions ofthe upper and lower gear shafts 39 a and 39 b through the upper shaftguides 311 and 321 and the lower shaft guides 313 and 323. It isdesirable that the protrusions 318, 319, 329 and 330 should be formed onan outside of the central shaft 40.

Explaining the second structure, after the protrusions 318, 319, 329 and330 are moved to one side, the protrusions 318, 319, 329 and 330 firmlyfix the positions of the upper and lower gear shaft 39 a and 39 b sothat the upper and lower gear shafts 39 a and 39 b may not be taken outunless a force is applied beyond a predetermined strength. Meanwhile, tomake it possible to move the positions of the upper and lower gearshafts 39 a and 39 b by a predetermined force, it is desirable that atleast one of the manipulating member 37 and/or the upper gear shaft 39 aand the lower gear shaft 39 b and/or the motor fixing member 32 and theright supporting frame 31 b are formed of a plastic material withelasticity.

FIGS. 16 to 18 are views explaining a forward rotation state, a backwardrotation state and a stopping state of the roller in the fourthembodiment of the present invention, just as described in FIGS. 12 to 14of the third embodiment.

It can be seen that the position of the supporting bar 327 is fixed morefirmly since the supporting bar 327 is hung on the supporting hangingprojections 357. Also, since the positions of the upper and lower gearshafts 39 a and 39 b are fixed to the protrusions 318, 319, 329 and 330,the position of the manipulating member 37 can be fixed more firmly.

Fifth Embodiment

A roller driving apparatus of a laminator in accordance with a fifthembodiment of the present invention is identical to the above-describedthird embodiment in many respects. Meanwhile, compared with the thirdembodiment of the present invention, the fifth embodiment of the presentinvention has differences in a topology structure of a fixing spring 43,and fixing structure and method of the supporting frame 31 b and themotor fixing member 32. Hereinafter, such a different structure will bedescribed below in detail.

FIG. 19 is an exploded perspective view showing the roller drivingapparatus of the laminator in accordance with the fifth embodiment ofthe present invention.

Referring to FIG. 19, the fifth embodiment of the present invention isidentical to the third embodiment in many respects. However, the fifthembodiment of the present invention further includes a first spacer 41and a second spacer 42 formed between a right supporting frame 31 b anda motor fixing member 32 to stably and correctly maintain an intervaltherebetween. Also, first and second coupling members 51 and 52 areinserted into the central portion of the spacers 41 and 42, and bothends of the first and second coupling members 51 and 52 are firmly fixedto the right supporting frame 31 b and the motor fixing member 32.

Meanwhile, both ends of the spacers 41 and 42 are in contact with innerfaces of the right supporting frame 31 b and the motor fixing member 32so that the interval between the right supporting frame 31 b and themotor fixing member 32 can be always maintained correctly andconstantly. According to this structure, each position of the rollergears 34, the connection gears 35 and the motor gear 36 can be correctlymaintained, thereby securing a stable transfer of the rotational force.

Also, a remarkable characteristic of the fifth embodiment in accordancewith the present invention is the topology of the fixing spring. Thefixing spring 43 includes a position fixing hole 431 and a positionfixing groove 432. The position fixing hole 431 is formed on one end ofthe fixing spring 43 to correctly set the position of the fixing spring43. The position fixing groove 432 is formed in a depressed shape on theother end of the fixing spring 43 to set correctly set the position ofthe fixing spring 43.

Additionally, a position fixing protrusion 316 and a left separationpreventing projection 317 are further formed on an outer circumferenceof the right supporting frame 31 b to which the position fixing groove432 is set. The right supporting frame 31 b is positioned to theposition fixing protrusion 316, and the left separation preventingprojection 317 is formed extending upward and downward from the end ofthe position fixing protrusion 316 so that the positioned fixing spring43 may not be separated outward.

Further, a spring hanging protrusion 326 and a right separationpreventing projection 325 are formed on an outer circumference of themotor fixing member 32 to which the position fixing hole 431 is set. Theposition fixing hole 431 is inserted into the spring hanging protrusion326, and the right separation preventing projection 325 is formedextending upward and downward from the outer circumference of the motorfixing member 32 adjacent to the spring hanging protrusion 326.

A procedure of positioning the fixing spring 43 according to theabove-described structure will be described below. On end of the fixingspring 43 having the position fixing groove 432 is inserted into themotor fixing member 32, so that the position fixing groove 432 ispositioned to the position fixing protrusion 316 of the right supportingframe 31 b. Then, in a state that the position fixing hole 431 isaligned with the spring hanging protrusion 326, the position fixing hole431 is pushed inward by a predetermined external force so that the otherend of the fixing spring 43 is inserted and fixed.

The roller driving apparatus of the laminator with the above-describedstructure can be operated more stably and reliably than the prior art.

Sixth Embodiment

A roller driving apparatus of a laminator in accordance with a sixthembodiment of the present invention is identical to the above-describedfifth embodiment in many respects. On the other hand, a predeterminedfixing member for firmly fixing the changed position of the manipulatingmember 37 is further formed.

FIG. 20 is an exploded perspective view showing the roller drivingapparatus of the laminator in accordance with the sixth embodiment ofthe present invention.

Referring to FIG. 20, the sixth embodiment of the present inventionincludes upper and lower portions 378 and 379 and a fixing member 70.The upper and lower portions 378 and 379 are formed in an arc shape onupper and lower portions of the manipulating member 37. The fixingmember 70 includes upper and lower inserting portions 71 and 72 formedin an outward shape similar to the upper and lower portions 378 and 379.Meanwhile, since the upper and lower portions 378 and 379 are formed inthe arc shape, the manipulating member 37 can be smoothly moved.

The fixing member 70 is fixedly formed on inner faces of the motorfixing member 32 and/or the right supporting frame 31 b. Also, apredetermined elasticity deformation can be obtained by forming thefixing member 70 using a plastic material. Further, the fixing member 70can be fixed on the inner faces of the motor fixing member 32 or/and theright supporting frame 31 b using a coupling member such as a bolt.

Furthermore, the upper inner-inserting portion 71 and/or the lowerinner-inserting portion 72 are/is adjacently formed spaced away from apredetermined protrusion, thereby supporting a stable operation of themanipulating member 37.

Simply explaining the operation of the fixing member 70, so as to rotatethe roller in the forward or backward rotation, the user inserts theupper and lower portions 378 and 379 of the manipulating member 37 intothe upper and lower inner-inserting portions 71 and 72. Then, theposition of the inserted upper and lower portions 378 and 379 is firmlyfixed by the topology of the upper and lower inner-inserting portions 71and 72, thereby supporting the operation of the laminator.

FIGS. 21 and 22 are views explaining the operation of the roller drivingapparatus of the laminator in the sixth embodiment of the presentinvention.

FIG. 21 is a view showing the manipulating member 37 supported in theforward rotational direction of the roller. In more detail, the upperportion 378 of the manipulating member 37 is supported by the upperinner-inserting portion 71 disposed at the left side of the fixingmember 70, and the lower portion 379 of the manipulating member 37 issupported by the lower inner-inserting portion 72 disposed at the rightside of the fixing member 70. The upper and lower inner-insertingportions 71 and 72 are formed in the same outward shape as the upper andlower portions 378 and 379 of the manipulating member 37, so that theyare not separated until a predetermined external force is appliedthereto.

FIG. 22 is a view showing the manipulating member 37 supported in thebackward rotational direction of the roller. In more detail, the upperportion 378 of the manipulating member 37 is supported by the upperinner-inserting portion 71 disposed at the right side of the fixingmember 70 and the lower portion 379 of the manipulating member 37 issupported by the lower inner-inserting portion 72 disposed at the leftside of the fixing member 70. The upper and lower inner-insertingportions 71 and 72 are formed in the same outward shape as the upper andlower portions 378 and 379 of the manipulating member 37, so that theyare not separated until a predetermined external force is appliedthereto.

According to the above-described structures of fixing the position ofthe manipulating member 37, the position of the manipulating member 37can be fixed more firmly. Further, if the user wants, the manipulatingmember 37 can be manipulated in the rotational direction of the rollerusing an external force applied by the user.

By using the various embodiments described above, the user canconveniently remove the film from the laminator or operate the laminatorat a low cost by using one-way rotating motors.

Although the preferred embodiments of the present invention have beendisclosed for illustrative purposes, those skilled in the art willappreciate that various modifications, additions and substitutions canbe made without departing from the scope and spirit of the invention asdefined in the accompanying claims.

INDUSTRIAL APPLICABILITY

A roller driving apparatus of a laminator in accordance with the presentinvention can implement forward and backward rotations of the roller tothe user's intensions by using only the driving of the motor rotating inone-way direction, thereby improving much more a convenience in a use ofthe laminator.

Further, through a simple modification of a structure, it is possible topull out the film from the small-size laminator. Therefore, comparedwith a large-sized laminator having the same function, the presentinvention has more advantageous merits in terms of a manufacturing cost.

1. A roller driving apparatus of a laminator comprising: a pair ofsupporting frames facing each other; upper and lower rollers formedbetween the supporting frames; upper and lower roller gears coupled witheach one end of the upper and lower rollers passing through onesupporting frame, for transferring rotational force to the upper andlower rollers, wherein the upper and lower roller gears are meshed witheach other; at least one connection gear selectively coupled to eitherthe upper roller gear or the lower roller gear, for transferringrotational force; a motor fixing means disposed outside the onesupporting frame, for fixing a motor; a motor gear fixed to a rotationalshaft of the motor, for selectively transferring the rotational force ofthe motor to the connection gear; a manipulating means disposed betweenthe one supporting frame and the motor fixing means, for manipulating atransfer state of the rotational force from the motor gear to either theupper roller gear or the lower roller gear by moving the connection gearusing an external force of the user, wherein a center of the connectiongear is coupled to the manipulating means; and a fixing means for stablyfixing the manipulating means.
 2. The roller driving apparatus of alaminator as recited in claim 1, wherein the manipulating meansincludes: a manipulating member, both ends of the connection gear beingcoupled to one side of the manipulating member; a manipulating barformed on the manipulating member and extended to the other side of themanipulating member; and a central shaft inserted into the onesupporting frame, the manipulating member and the motor fixing means,for serving as a rotational center of the manipulating member.
 3. Theroller driving apparatus of a laminator as recited in claim 2, whereinthe manipulating member includes ellipse-shaped central-shaft insertingholes into which the central shaft is inserted; and wherein both the onesupporting frame and the motor fixing means include circular fixingholes into which the central shaft is inserted, respectively.
 4. Theroller driving apparatus of a laminator as recited in claim 1, whereinhanging protrusions are protrusively formed on an outer face of themanipulating means; and wherein the one supporting frame and/or themotor fixing means includes upper hanging holes and/or stopping holesand/or lower hanging holes into which the hanging protrusions areinserted, for correctly supporting a position of the manipulating means.5. The roller driving apparatus of a laminator as recited in claim 1,wherein the manipulating means includes: link panels formed in contactwith the one supporting frame and the motor fixing means, both ends ofupper and lower connection gears being coupled to the link panels; acentral shaft fixed to the one supporting frame and the motor fixingmeans, for serving as a rotational center of the link panels; and amanipulating member fixed to the upper connection gear or the lowerconnection gear, for transferring the rotational force by meshing theupper connection gear or the lower connection gear with the motor gearand the roller gear through an appliance of an external force of theuser.
 6. The roller driving apparatus of a laminator as recited in claim5, wherein the fixing means includes: at least two hanging groovesformed on one side of the manipulating member; and a hanging part towhich the hanging grooves are inserted, so that a position of theconnection gear is fixed according to that of the manipulating member.7. The roller driving apparatus of a laminator as recited in claim 6,wherein the hanging part is an external case.
 8. The roller drivingapparatus of a laminator as recited in claim 6, further comprising aspring for coupling the manipulating member and other supporting pointto firmly supporting the position of the manipulating member at anoperation of the laminator.
 9. The roller driving apparatus of alaminator as recited in claim 5, further comprising an arc-shaped shaftguide formed on the one supporting frame and the motor fixing means,into which the upper and lower connection gears are inserted, therebyguiding rotational operations of the upper and lower connection gears.10. The roller driving apparatus of a laminator as recited in claim 1,wherein the manipulating means includes: a manipulating member to whichupper and lower connection gears are coupled, for applying an externalforce of the user in up and down directions; and a central shaftinserted into a central portion of one side of the manipulating memberand fixed to the one supporting frame and the motor fixing means. 11.The roller driving apparatus of a laminator as recited in claim 10,wherein the fixing means includes: a spring of which both ends are fixedto the one supporting frame and/or the motor fixing means; and a springguide formed on the manipulating member and to which the spring isinserted, and elasticity force of the spring being applied to the springguide.
 12. The roller driving apparatus of a laminator as recited inclaim 10, wherein the spring guide is formed in one pair on themanipulating member and includes at least two planar surfaces.
 13. Theroller driving apparatus of a laminator as recited in claim 10, furthercomprising: circular central holes formed on both the supporting framesand the motor fixing means, the central shaft being inserted into thecircular central holes; and upper and lower shaft guides into which theupper and lower connection gears are inserted to achieve a smoothmovement of the upper and lower connection gears according to a movementof the manipulating means.
 14. The roller driving apparatus of alaminator as recited in claim 10, further comprising at least one spacerformed between the one supporting frame and the motor fixing means tocorrectly and stably maintain an interval therebetween.
 15. The rollerdriving apparatus of a laminator as recited in claim 10, furthercomprising: at least one spacer formed in contact with inner faces ofthe one supporting frame and the motor fixing means; and a screwinserted into an inside of the spacer to fix the spacer to the onesupporting frame and the motor fixing means.
 16. The roller drivingapparatus of a laminator as recited in claim 10, further comprising: aposition fixing hole formed on one end of the spring, for fixing aposition of the spring; a spring hanging protrusion formed on an outercircumference of either the one supporting frame or the motor fixingmeans, for fixing a position of the spring, wherein the position fixinghole engages the spring hanging protrusion; and a right separationpreventing projection extended upward and downward from the outercircumference of the spring hanging protrusion.
 17. The roller drivingapparatus of a laminator as recited in claim 10, further comprising: aposition fixing groove formed in a depressed shape on an outercircumference of the other side of the spring; a spring position fixingprotrusion formed on an outer circumference of either the one supportingframe or the motor fixing means, for setting a position of the spring,wherein the position fixing groove is set to the spring position fixingprotrusion; and a left separation preventing projection for preventingthe set fixed spring from being separated.
 18. A roller drivingapparatus of a laminator comprising: a pair of supporting frames facingeach other; upper and lower rollers disposed between the supportingframes; upper and lower roller gears coupled with each one end of theupper and lower rollers passing through one supporting frame, fortransferring rotational force to the upper and lower rollers, whereinthe upper and lower roller gears are meshed with each other; aconnection gear selectively coupled with either the upper roller gear orthe lower roller gear by an external force, for transferring arotational force; a motor fixing means disposed outside the onesupporting frame, for fixing a motor; a motor gear fixed to a rotationalshaft of the motor, for selectively transferring the rotational force ofthe motor to the connection gear by an external force; a manipulatingmeans to one side of which both ends of the connection gear are coupled;a central shaft inserted into the one supporting frame, the manipulatingmeans and the motor fixing means, for serving as a rotational center ofthe manipulating means; a hanging protrusion protrusively formed on atleast one outer face of the manipulating means; and upper hanging holesand/or stopping holes and/or lower hanging holes formed on the onesupporting frame and/or the motor fixing means, for correctly supportinga position of the manipulating means.
 19. The roller driving apparatusof a laminator as recited in claim 18, wherein the manipulating meansincludes ellipse-shaped central-shaft inserting holes into which thecentral shaft is inserted; and wherein both the one supporting frame andthe motor fixing means include circular fixing holes into which thecentral shaft is inserted, respectively.
 20. The roller drivingapparatus of a laminator as recited in claim 18, wherein themanipulating means includes a manipulating bar formed on themanipulating means and extended to the other side of the manipulatingmeans, such that in use an external force of the user is applied to themanipulating bar.
 21. A roller driving apparatus of a laminatorcomprising: a pair of supporting frames facing each other; upper andlower rollers formed between the supporting frames; upper and lowerroller gears coupled with each one end of the upper and lower rollerspassing through one supporting frame, for transferring each rotationalforce to the upper and lower rollers, wherein the upper and lower rollergears are meshed with each other; a motor fixing means disposed outsidethe one supporting frame, for fixing a motor; upper and lower connectiongears selectively coupled to either the upper roller gear or the lowerroller gear, for transferring rotational force; link panels being formedin contact with the one supporting frame and the motor fixing means,both ends of the upper connection gear and the lower connection gearbeing coupled to the link panels; a central shaft fixed to the onesupporting frame and/or the motor fixing means, for serving as arotational center of the link panels; a manipulating means fixed to theupper connection gear or the lower connection gear, for transferring therotational force by meshing the upper connection gear or the lowerconnection gear with the motor gear and the roller gear through anappliance of an external force of the user; at least two hanging groovesformed on one side of the manipulating means, for supporting a positionof the manipulating means at an operation of the laminator; and ahanging means for fixing a position of the manipulating means into whichthe hanging grooves are inserted.
 22. The roller driving apparatus of alaminator as recited in claim 21, wherein the hanging grooves are formedon a lower portion of the manipulating means.
 23. The roller drivingapparatus of a laminator as recited in claim 21, wherein the hangingmeans is an external case.
 24. The roller driving apparatus of alaminator as recited in claim 21, further comprising a spring forcoupling the manipulating means and other supporting point to firmlysupporting the position of the manipulating means at an operation of thelaminator.
 25. The roller driving apparatus of a laminator as recited inclaim 21, further comprising a spring for coupling the manipulatingmeans and other supporting point disposed at a lower portion of themanipulating means, thereby firmly supporting the position of themanipulating means at an operation of the laminator.
 26. The rollerdriving apparatus of a laminator as recited in claim 21, furthercomprising an arc-shaped shaft guide formed on the one supporting frameand the motor fixing means, into which the upper and lower connectiongears are inserted, thereby guiding rotational operations of the upperand lower connection gears.
 27. The roller driving apparatus of alaminator as recited in claim 21, wherein the link panels are formed incontact with inner faces of the motor fixing means and the onesupporting frame.
 28. A roller driving apparatus of a laminatorcomprising: a pair of supporting frames facing each other; upper andlower rollers formed between the supporting frames; upper and lowerroller gears coupled with each one end of the upper and lower rollerspassing through one supporting frame, for transferring each rotationalforce to the upper and lower rollers, wherein the upper and lower rollergears are meshed with each other; a pair of connection gears selectivelycoupled to either the upper roller gear or the lower roller gear, fortransferring rotational force; a motor fixing means formed outside theone supporting frame, for fixing a motor; a motor gear selectivelymeshed with the connection gears, for selectively transferring arotational force of the motor to the connection gears; a manipulatingmeans for selectively transferring the rotational force to the upper andlower connection gears through an external force, wherein central shaftsof the upper and lower connection gears are fixed to upper and lowerportions of the manipulating means; a central shaft inserted into acentral portion of the manipulating means and fixed to both the onesupporting frame and the motor fixing means; a spring guide formed onthe manipulating means, for stably fixing a position of the manipulatingmeans; and a spring of which one side is fixed to the one supportingframe and/or the motor fixing means, for supporting the position of themanipulating means at a rotation of the roller.
 29. The roller drivingapparatus of a laminator as recited in claim 28, wherein the springguide is formed on a portion of the manipulating means and includes atleast two planar surfaces.
 30. The roller driving apparatus of alaminator as recited in claim 28, further comprising: circular centralholes formed on both the supporting frames and the motor fixing means,the central shaft being inserted into the circular central holes; andupper and lower shaft guides formed on the supporting frames and themotor fixing means and into which the upper and lower connection gearsare inserted, so that the upper and lower connection gears are smoothlymoved according to a movement of the manipulating means.
 31. The rollerdriving apparatus of a laminator as recited in claim 28, furthercomprising at least one spacer formed between the one supporting frameand the motor fixing means to correctly and stably maintain an intervaltherebetween.
 32. The roller driving apparatus of a laminator as recitedin claim 28, further comprising a screw formed between the onesupporting frame and the motor fixing means to fix the positions of theone supporting frame and the motor fixing means.
 33. The roller drivingapparatus of a laminator as recited in claim 28, wherein one end of thespring is pushed into the one supporting frame and/or the motor fixingmeans.
 34. The roller driving apparatus of a laminator as recited inclaim 28, further comprising: a position fixing hole formed on one endof the spring, for fixing a position of the spring; a spring hangingprotrusion formed on an outer circumference of either the one supportingframe or the motor fixing means, for fixing a position of the spring,wherein the position fixing hole is inserted into the spring hangingprotrusion; and a right separation preventing projection extended upwardand downward from the outer circumference of the spring hangingprotrusion.
 35. The roller driving apparatus of a laminator as recitedin claim 28, a position fixing groove formed in a depressed shape on anouter circumference of the other side of the spring; a spring positionfixing protrusion formed on an outer circumference of either the onesupporting frame or the motor fixing means, for fitting a position ofthe spring, wherein the spring position fixing protrusion is insertedinto the position fixing groove; and a left separation preventingprojection for preventing the fixed spring from being separated.
 36. Theroller driving apparatus of a laminator as recited in claim 28, furthercomprising: supporting bar inserting holes formed on predeterminedpositions of the right supporting frame and the motor fixing means,respectively; a supporting bar of which both ends are inserted into thesupporting bar insertion holes; and a supporting bar hanging projectionprotrusively formed on an end of the manipulating means and contactedwith the supporting bar, for fixing more firmly a position of thesupporting bar.
 37. The roller driving apparatus of a laminator asrecited in claim 28, further comprising an upper shaft guide and/or alower shaft guide for firmly fixing a moved position of the gear shafts,wherein the upper shaft guide and/or the lower shaft guide include(s)protrusions protusively formed toward an inner circumference onpredetermined positions of the supporting frame and/or the motor fixingmeans, the upper gear shaft and/or the lower gear shaft inserted into acenter of the connection gears being disposed at the supporting frameand/or the motor fixing means.
 38. A roller driving apparatus of alaminator comprising: a pair of supporting frames facing each other;upper and lower rollers formed between the supporting frames; upper andlower roller gears coupled with each one end of the upper and lowerrollers passing through on supporting frame, for transferring rotationalforce to the upper and lower rollers, wherein the upper and lower rollergears are meshed with each other; at least one connection gearselectively coupled to either the upper roller gear or the lower rollergear, for transferring rotational force; a motor fixing means disposedoutside the one supporting frame, for fixing a motor; a motor gear fixedto a rotational shaft of the motor, for selectively transferring therotational force of the motor to the connection gear; a manipulatingmeans disposed between the one supporting frame and the motor fixingmeans, for manipulating a transfer state of the rotational force fromthe motor gear to either the upper roller gear or the lower roller gearby moving the connection gear using an external force of a user, whereina center of the connection gear is coupled to the manipulating means;and a fixing means fixed to an inner face of the motor fixing meansand/or the one supporting frame, for stably fixing a position of themanipulating means, wherein a pair of inner-inserting portions areformed in the same outward shape as a portion of the manipulating means.39. The roller driving apparatus of a laminator as recited in claim 38,wherein upper and lower portions of the manipulating means are formed inthe same shape as the inner-inserting portions.
 40. The roller drivingapparatus of a laminator as recited in claim 38, wherein theinner-inserting portions are formed in an arc shape on the upper andlower portions of the fixing means in one pair, respectively, therebyfixing the position of the manipulating means.